As per your concern I will let you know some topics for GD so that it would be easy for you to prepare for IIM Shillong.

Here are some topics

Are digital payments secure enough for the Indian economy to go cashless?

Ban 500, 1000 notes - Corruption Uprooted or just changing clothes!

Can we dream of hosting the Olympics?

Chinese Goods vs Indian Goods

Do we really need Smart Cities?

Economic growth is more important than Ecological protection

EQ or IQ

Extra curricular activities should be made compulsory in school

Facebook needs to clarify policies on content removal!

How demonetization is affecting common people more than black money holders?

How is Technology impacting the Banking sector?

Is compulsory attendance really needed in college?

Is it fair to spare political parties from income tax investigation?

Is the youth of India confident or confused?

Non-execution of GST bill might herald end of present government

One India One Election - Pros and Cons

PM's vision to make India a Manufacturing Hub - dream or a practical possibility?

Polythene bags must be banned!

Problems unite us, Religion divides us

Should Hindi be the official language of India?

Should national anthem be played in cinema halls?

Should we change the present system of education in our country?

Solution of corruption is a mirage till we catch top public figure

Will Reliance Jio be a sustainable business model in a country like India?

Youth in Politics